Hello Paul. Do you have a version of your Coal-trol that can be used for controlling the water temp in a boiler? I assume you would have to have a water temperature input from a temperature bulb in the water jacket instead of an air temperature input from a room thermostat/thermometer.
I'm planing on converting my hand feed boiler to a stoker-feed for next year, and I'm curious if you have a controller available or prototype on the bench??
I have an adjustable aquastat in my boiler now, but it is an on/off switch, like an analog thermostat. I'd like to be able to program the water temp so that I maintain only 130* or so during the day, ramp it up to 160* at night and for weekends.
Thanks Greg L